The alleged assault happened in a stairwell of a West Philly building.
A 23-year-old woman was sexually assaulted early Sunday at gunpoint in the stairwell of a West Philadelphia apartment building, police said.
The woman told police she walked into the apartment building, at the 1100 block of Cobbs Creek Parkway, around 4:30 a.m. While searching for apartment No. 205 she was approached by a man in a black face mask, police said.
The man pulled a gun and ordered her into a nearby stairwell, where he sexually assaulted her, police said.
No arrests have been made.